Spring-tooth harrow.



No. 638,513. Patented Dec. 5,1899. F. J. HENRY.

SPRING TOOTH HABROW.

(Application filed Apt. 30, 1897.)

2 Sheats$heet I.

(No Model.)

2' TOYKNE'Y N0. 638,5l3. Patented Dec. 5, I899. F. J. HENRY.

SPRING TOOTH HARROW.

(Application filed Apr. 30, 1897.) Model 2 Sheets-Sheet z,

NIE STATES ansrr rrrce.

FRANK J. HENRY, OF KALAMAZOO, MICHIGAN.

SPRING-TOOTH HARROW.

SPECIFICATION formingpart of Letters Patent No. 638,513, dated December 5, 1899.

Application filed April 30, 1897. $erial No. 634,616. (No model.)

To all 1071 0777, it may concern:

Be itknown that I, FRANK J. HENRY, of Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Spring-Tooth l-Iarrows; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accom panying drawings, and to the letters and numerals of reference marked thereon, which form part of this specification.

My invention has for its object certain improvements in spring-tooth harrows, which will be hereinafter more fullypointed out and claimed.

In the drawings forming a part of this specification, Figure 1 is a perspective view of a harrow with my improvements applied. Fig. 2 is a side view of a portion of the harrowframe at the point Where the bars are coupled together. Fig. 3 is a perspective view of onehalf of the coupling-clip. Figs. 4, 5, 6, 7, 8, and 9 illustrate details of construction.

In the several figures of the drawings similar letters and numerals will refer to corresponding parts in the several views.

Having described my invention in general terms as illustrated in the figures, I will now proceed to describe in detail its construction and operation.

The frame of my harrow is constructed of substantially square or rectangle metal bars 1 2, placed in the frame diagonally, so as to form substantially diamond-shaped openings between the frame bars, as best illustrated in Fig. 1. The frame-bars cross each other so that the two frame-bars are in contact with each other at the intersecting angles of the frame-bars, so that the angle of one bar will engage the angle of the other bar, as best illustrated in Figs. 2, 4, 5, 6, and 9, so that when the pressure is applied to the couplingirons the intersecting angles of the bars irnpinge against each other in a way that prevents the frame-bars from sliding or moving in the coupling-irons.

In constructing the frame the same is so formed as to give the requisite and proper spaces of the teeth, so that the whole surface l will be cut when the harrow passes over the same. I

The frame-bars 1 2 at their intersecting points are rigidlyheld in place to prevent sliding or working by what I term a divided frame-clip or coupling-iron 3 6. The lower half 3 of coupling-iron is provided with angular groove 3 (best illustrated in Fig. 9) for receiving one of the angles of the framebar 1. This section of the coupling-iron is provided with bolt-holes a fertile reception of bolts5 5. (Best illustrated in Fig.7.) Framebar 2 is placed in cross-grooves Z9 5 (best illustrated in Fig. 9,) the frame-bars being shown in dotted lines. Having thus located the bars in the lower half of the couplingirons I place the upper half f the couplingiron, over the intersecting bars. Fig. 8, is placed astride of the intersecting angles of frame-bar 2 with frame-bar 1. The cross-grooves 0 (best illustrated in Fig. 8) engage the other frame-bar of the harrow, so that when bolts 5 5 are passed through openings a a and the nuts turned down the frame-bars are rigidly clamped together sufficiently tight to prevent their movement, their contact-points being rigid.

For the purpose of securing curved springteeth in position underneath the clips or coupling-irons I provide a substantially fiat surfacef on thelower face of the frame-clip or coupling-iron, (best illustrated in Figs. 6 and 9,) on the under side of the lower half of the coupling-iron, which fits inside of walls g g of tooth-clip g, Fig. 7, the tooth-clip being supported and held in place by tightening-bolts 5 5. The curved spring-tooth 20 is placed in tooth-clip g. Walls 9 g, Fig. 7, of clip g restrain the lateral movement of the tooth and also'engage the opposing edges of clip 3. The opposing edges having flat surface f, project into the opening in clip g, Fig. 7, and prevent the parts from lateral movement, and by tightening the screw-threaded nuts on the tightening-bolts the two halves of the couplingiron and the tooth are held in position in substantially the same vertical line of the parts. By this arrangement of parts the frame-bars are carried in a somewhat elevated plane above the tooth-clip, affording clearance between the harrow-frame and the ground.

of the ground between its lateral extremities For the purpose of gaging the depth of the Grooveb,

cut of the teeth in the soil and in carrying the frame and teeth out of contact with the ground in transporting the harrow I provide lever-mechanism-operating shoes, as hereinafter more fully described. For this purpose I provide upwardly-extending brackets 4, which are secured by bolts 5 5 (best illus trated in Figs. 4, 5, and 6) in substantially the same vertical plane of the coupling-iron,clips, and tooth. In the upper free end of brackets 4 4 I mount turnable rod 7. (Best illustrated in the figures last named.) Connected rigidly to these turnable rods I attach shoes 8, which curve downward and rearward, so that they may be elevated or depressed for the purposes heretofore stated. The turnable rods 7 in the brackets are operated by means of standards rigidly secured to the turnable rods operated on by lever 10, to which is connected a spring-actuated dog 11, which engages ratchet 12, rigidly secured to connecting-bars 13 at the rear of the harrow, and at the front of connecting-rod 13 the same is connected with a standard or bracket 14, rigidly secured to the turnable rod 15, mounted in front brackets 4 4, secured to the frame in substantially the same way as brackets illustrated in Figs. 4, 5, and 6 are attached. These front brackets carry, support, and allow to rotate turnable rod 16 in the front of the frame, to which turnable rod I attach rigidly shoe 17, deflected downward and rearward, as before stated.

The advantage of the construction herein shown and described consists in having a lever-and-shoe mechanism supported on the frame in substantially the same Vertical line with the coupling-irons,frame-bars,and tooth.

I, however, do not limit myself to this distinctive feature, because the lever operating and supporting mechanism may be located elsewhere on the frame, the distinctive feature being the application of the curved shoes on a lever-operating rocking bar where the shoe or shoes operate within the frame, which has diamond-shaped or irregular openings between the frame bars, which harrows are known and designated in the trade as the A- shaped -frame harrowthat is to say, where the sections of the harrow when coupled as a whole present an angle at the front deflecting outward from the center point.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a harrow the combination of the framebars crossing each other at an angle, curved spring-teeth located in the vertical line of the intersecting angles of the frame-bars, a toothclip, a bracket located on the upper surface of the barrow-frame substantially at the vertical line of the intersecting angles of the frame-bars, and brackets extending above the frame-bars andprovided at their free ends with journals for receiving a turnable rod, a turnable rod journaled in the brackets operated by lever mechanism and shoes rigidly secured to the turnable rods extending downward and rearward, substantially as set forth, for the purposes stated.

2. In a harrow the combination of the intersecting frame-bars engaging each other at their intersecting angles, a frame-clip composed of two intersecting and engaging sections arranged to clamp the frame-bars and to engage each other, a spring-tooth located in a vertical line of the intersecting angles of the frame-bars, a tooth-clip, brackets located in substantially the same vertical line of the intersecting angles of the frame bars, the bracket extending upwardly from the upper surface of the frame and provided at their free ends with journals forreceiving turnable rods, turnable rods journaled to the free ends of the brackets operated by lever mechanism, shoes rigidly secured to the turnable toothbar extending downward and rearward, substantially as set forth, for the purposes stated.

3. In a harrow the combination of the framebars crossing each other at an angle, curved spring-teeth located in substantially a vertical line with the intersecting angles of the frame-bars, a tooth-clip provided with'walls g g, brackets located above the frame-bars provided with journals, the turnable rod j ournalcd in the brackets operated by lever mechanism and shoes rigidly secured to the turnable rods extending downward and rearwardly, substantially as set forth, for the purposes stated.

4. In a harrow, the combination of the intersectin g frame-bars, the interlocking frameclips, the curved spring-teeth, the tooth-clip, the bracket, arranged substantially in the same Vertical line, and means for holding the parts together, substantially as set forth.

5. In a spring-tooth harrow, the combination of the intersecting frame-bars, the curved tooth mounted on the frame-clip below the horizontal line of the frame, the clip for securing the tooth on its seat,the frame-bracket, provided with means for raising and lowering the harrow-frame, the various parts being arranged in substantially the same vertical line, with means for holding the various parts together for the purpose stated.

In witness whereof I have affixed my signature in presence of two witnesses.

FRANK J. HENRY.

Witnesses:

N. O. EVANS, J. E. WEnBoRN. 

